Biogeomorphic feedback between plant growth and flooding causes alternative stable states in an experimental floodplain

摘要: It is important to understand the mechanisms of vegetation establishment on bare substrate in a disturbance-driven ecosystem because many valuable services. This study tested for empirical indications local alternative stable states controlled by biogeomorphic feedbacks using flume experiments with alfalfa: (1) single flood different intensity and plant growth, (2) long-term evolution repeated flooding seeding. We observed: combination thresholds growth magnitude upgrowing seedlings survive; bimodality biomass after floods indicating existence two states, either densely vegetated or bare; (3) facilitation spatial pattern formation channels sand bars. In conclusion, indicators were demonstrated associated feedbacks, which could contribute protection restoration such ecosystems.